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Alexandre Henrique S. Dias
I’m a Data Scientist passionate about statistics applied to Machine Learning algorithms and how to turn those algorithms into tools to make people live better and happier. Also, I love writing about data science stuff. Currently, I do my job as a Data Scientist focusing on solving problems in the domain of Human Resources.
Positions
Data Scientist
B2W Digital
São Paulo, SP
Present - 2021
- Statistical modelling and analysis of HR People Analytics-related problems.
Data Scientist
Looqbox
São Paulo, SP
2021 - 2019
- Development of BI reports and dashboards using R, Python, and SQL.
- Maintainer of the Looqbox R Package used to build R objects and data structures compatible with the Looqbox Application.
Education
M. Sc., Electrical and Computer Engineering
UFRN - Federal University of Rio Grande do Norte
Natal, RN
Present - 2021
- Majoring in Data Processing and Analytics
MITx Micromaster Program in Statistics and Data Science
MITx
EdX
Present - 2020
- The MITx MicroMaster in SDSS covers the fundamentals of data science, statistics, and machine learning.
B. Sc., Computer Engineering
UFRN - Federal University of Rio Grande do Norte
Natal, RN
2019 - 2018
- Member of the Modeling and Scientific Data Analysis team.
B. Sc., Sciences & Technology
UFRN - Federal University of Rio Grande do Norte
Natal, RN
2017 - 2015
- Linear Algebra and Analytical Geometry assistant teacher.
- Calculus II assistant teacher.
Selected Writing
A mathematical derivation of the Law of Total Variance
N/A
2020
- Understanding what is and when to apply the Law of Total Variance.
Clustering with K-means: simple yet powerful
N/A
2019
- Explain what is Cluster Analysis, and how the K-means algorithm work providing its pros and cons.
An introduction to Linear Regression
N/A
2019
- Explain all assumptions behind Linear Regression, how to measure its performance, and how to implement it in Python.